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IupControls

Several additional controls are included in a separate Controls Library.
These controls are drawn by IUP using CD on a IupCanvas control, and are not native controls.

Applications making use of these controls may need to bundle iupcontrols.dll/so

The IupControlsOpen function must be called after IupOpen, however pGUI does this automatically.

None of these routines are supported by pwa/p2js.